Template Technical Documentation - Livingston County x Table of Contents 1 Introduction ... Technical documentation GE Power & Water –Original Instructions Product Acoustic Specifications

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GE Power & Water – Original Instructions –

Technical Documentation Wind Turbine Generator Systems 1.7-103 with LNTE 50 Hz and 60 Hz

Product Acoustic Specifications Noise-Reduced Operation according to IEC Incl. Octave Band Spectra Incl. 1/3rd Octave Band Spectra

PLEASANT RIDGE EXHIBIT 15

GE Power & Water – Original Instructions –

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Table of Contents

1 Introduction.................................................................................................................................................................................................................. 5 2 Sound Power Levels ................................................................................................................................................................................................ 6 3 Sound Power Level as a Function of Wind Speed .................................................................................................................................. 6 4 Uncertainty Levels .................................................................................................................................................................................................... 7 5 Tonality ........................................................................................................................................................................................................................... 7 6 IEC 61400-11 and IEC/TS 61400-14 Terminology .................................................................................................................................. 7 7 Octave Band Spectra and 1/3rd Octave Band Spectra ........................................................................................................................ 7 8 References .................................................................................................................................................................................................................... 8 Annex I – Octave Band Spectra - 80 m hub height .......................................................................................................................................... 9 Annex II – 1/3rd Octave Band Spectra - 80 m hub height .......................................................................................................................... 12




1.7-103_xxHz_SCD_allComp_NRO_IEC_LNTE.ENxxx.00.docx 5/16

1 Introduction

Thanks to its plant control system, the 1.7-103 with Low Noise Trailing Edge (LNTE) is able to enter noise-

reduced operating mode (NRO = Noise-Reduced Operation) without any manual intervention. This is not a

compulsory fixed operating point, but a range below ‘normal’ nominal operation that can be defined by means

of parameter settings.

With the aid of the control system the turbine can be switched to noise-reduced mode, usually depending on

the time of day, e.g. NRO at nighttime and normal operation at daytime.

The noise emitted by the 1.7-103 with LNTE is predominantly determined by the aerodynamic broadband noise

of the rotor blades, which is directly dependent on the circumferential or blade tip speed. Blade noise increases

with increasing wind speed until rated power is reached.

The sound power level can be lowered by reducing the rotor speed, thus lowering and limiting the tip speed.

The rated power level is reduced accordingly, which has a secondary positive effect on the noise level through

earlier blade pitching.

In the upper wind speed range at the benefit of lower noise levels, there is some loss in energy yield because of

the reduction in power level.

Controller parameter settings determine at which maximum noise emission level the turbine operates.

Reference values for various reduced sound power levels are given further on in the document.

It is always possible to determine compliance of the actual operating mode with the set operating mode as the

control system constantly records the operating data on the system computer. This could be useful in meeting

possible requirements issued by the monitoring authorities.

Noise-reduced operation (NRO) is enabled in a time-controlled manner via a leaded time switch. The most

significant data are:

P_Act 10 minutes mean value of electrical active power

N_Rot 10 minutes mean value of rotor speed

The two-stored parameter values thus provide clear and traceable evidence of the noise-reduced operational

mode. A retrospective check of the installed system can be carried out by evaluating up to three months of

recorded data.





2 Sound Power Levels

Following are 10 minute mean values of nominal power and rotor speed for the 1.7-103 with LNTE turbine at

different reference sound power levels (LWA) with an uncertainty of 2 %.

Baseline NRO100 NRO101 NRO102 NRO103 NRO104

Rotor Speed [rpm] 15.75 12.2 12.7 13.4 14.0 14.7

Rated Power [kW] 1720 1332 1387 1463 1529 1605

Noise Level LWA (dB) 105.0 100.0 101.0 102.0 103.0 104.0

Table 1: Noise-reduced operation modes

3 Sound Power Level as a Function of Wind Speed

The following table presents calculated reference sound power levels as a function of hub height wind .

Wind speed at hub height

(m/s)

NRO 100 LWA (dB)

NRO 101 LWA (dB)

NRO 102 LWA (dB)

NRO 103 LWA (dB)

NRO 104 LWA (dB)

4 94.7 94.7 94.7 94.7 94.7

5 94.7 94.7 94.7 94.7 94.7

6 95.5 95.5 95.5 95.5 95.5

7 98.6 98.6 98.6 98.6 98.6

8 99.6 100.5 101.4 101.4 101.4

9 100.0 100.7 101.6 102.7 103.6

10 - cutout 100.0 101.0 102.0 103.0 104.0

Table 2: Reference sound power levels

The corresponding wind speed at 10 m height depends on hub height. It can be calculated for a given surface

roughness using a logarithmic trend for wind shear:

0

0

10

ln

10ln

zheighthub

zm

VV hubheightm *

Typical values for on land surface roughness (z0) are 0.05 m, depending on terrain conditions.

* Simplified from IEC 61400-11: 2006 equation 7





4 Uncertainty Levels

The apparent sound power levels given above are calculated mean levels. If a wind turbine noise performance

test is carried out, it needs to be done in accordance with the regulations of the international standard

IEC 61400-11, ed. 2.1: 2006. Uncertainty levels associated with measurements are described in

IEC/TS 61400-14.

Per IEC/TS 61400-14, LWAd is the maximum apparent sound power level for 95 % confidence level resulting

from n measurements performed according to IEC 61400-11 standard: LWad = LWA + K, where LWA is the mean

apparent sound power level from IEC 61400-11 testing reports and K = 1.645 σT.

The testing standard deviation values σT, σR and σP for measured apparent sound power level are described by

IEC/TS 61400-14, where σT is the total standard deviation, σP is the standard deviation for product variation

and σR is the standard deviation for test reproducibility.

Assuming σR < 0.8 dB and σP < 0.8 dB as typical values leads to a calculated K < 2 dB for 95 % confidence

level.

5 Tonality

The tonal audibility (La,k), when measured in accordance with the IEC 61400-11 standard, for the GE’s 1.7-103

with LNTE is less than or equal to 4 dB.

6 IEC 61400-11 and IEC/TS 61400-14 Terminology

LWA,k is wind turbine apparent sound power level (referenced to 10-12W) measured with A-weighting as function of reference wind speed v10m. Derived from multiple measurement reports per IEC 61400-11, it is considered as a mean value

σP is the product variation i.e. the 1.7-103 with LNTE unit-to-unit product variation; typically < 0.8 dB

σR is the overall measurement testing reproducibility as defined per IEC 61400-11; typically < 0.8 dB with adequate measurement conditions and sufficient amount of data samples

σT is the total standard deviation combining both σP and σR

K = 1.645 · σT is defined by IEC/TS 61400-14 for 95 % confidence level

Ro is the ground measuring distance from the wind turbine tower axis per IEC 61400-11, which shall equal the hub height plus half the rotor diameter

La, k is the tonal audibility according to IEC 61400-11, described as potentially audible narrow band sound

7 Octave Band Spectra and 1/3rd Octave Band Spectra

The tables in Annex I are showing octave band values for different noise-reduced operational modes at

different wind speeds.

The tables in Annex II are showing the 1/3rd octave band values for different noise-reduced operational modes

at different wind speeds.





8 References

IEC 61400-1, Wind turbines – part 1: Design requirements, ed. 3, 2005-08

IEC 61400-11, wind turbine generator systems part 11: Acoustic noise measurement

techniques, ed. 2.1, 2006-11

IEC/TS 61400-14, Wind turbines – part 14: Declaration of apparent sound power level and

tonality values, ed. 1, 2005-03

MNPT – Machine Noise Performance Test, Technical documentation





Annex I – Octave Band Spectra - 80 m hub height

1.7-103 with LNTE NRO 104 – Octave Band Spectra (dB)

Standard wind speed at 10 m [m/s] 3 4 5 6 7 8 9 10-Cutout

Hub height wind speed at 80 m [m/s] 4.0 5.6 7.0 8.4 9.7 11.1 12.5 13.9-cut out

Frequency (Hz)

32 66.5 66.2 69.9 73.7 75.1 75.1 75.0 74.8

63 75.7 75.5 79.3 83.0 84.5 84.5 84.5 84.2

125 82.6 82.5 86.4 90.0 91.6 91.7 91.8 91.6

250 85.6 85.6 89.2 92.7 93.9 93.7 93.8 93.8

500 87.4 87.0 90.9 94.5 95.5 95.1 95.2 95.3

1000 89.7 89.3 93.0 96.9 99.3 99.7 99.9 100.0

2000 88.9 89.5 93.4 96.9 98.9 98.8 98.6 98.3

4000 79.9 80.9 86.1 90.5 90.9 90.1 89.0 88.6

8000 63.6 63.6 67.6 72.1 73.1 72.8 71.6 71.2

16000 20.6 23.8 29.6 33.7 33.8 32.1 32.4 34.0

Total apparent sound power level LWA.k [dB]

94.7 94.7 98.6 102.3 104.0 104.0 104.0 104.0

Table 3: Octave Spectra for 1.7-103 with LNTE NRO 104 - hub height wind speeds were calculated based on equation (7) from IEC standard 61400-11:2006. using a representative roughness length of 0.05 m

1.7-103 with LNTE NRO 103 – Octave Band Spectra



Frequency (Hz)

31.5 66.5 66.2 70.0 73.7 74.1 74.1 74.0 73.7

63 75.7 75.5 79.4 83.0 83.5 83.5 83.4 83.2

125 82.6 82.5 86.4 90.0 90.7 90.7 90.7 90.6

250 85.6 85.6 89.2 92.6 93.2 92.8 92.9 92.9

500 87.5 87.0 90.9 94.5 94.8 94.3 94.4 94.5

1000 89.7 89.2 93.0 96.9 98.1 98.8 98.9 98.9

2000 88.9 89.5 93.5 96.9 97.8 97.7 97.4 97.1

4000 79.8 81.2 86.1 90.5 89.9 89.1 88.4 87.5

8000 63.6 63.6 67.6 72.1 72.1 71.5 70.4 70.1

16000 20.6 23.8 29.5 33.7 33.5 31.0 30.7 32.8


94.7 94.7 98.6 102.3 103.0 103.0 103.0 103.0









Frequency (Hz)

31.5 66.5 66.2 70.0 72.9 73.1 73.1 73.0 72.8

63 75.7 75.5 79.4 82.3 82.5 82.5 82.4 82.3

125 82.6 82.5 86.4 89.3 89.7 89.8 89.7 89.7

250 85.6 85.6 89.2 92.0 92.5 91.9 91.9 92.0

500 87.5 87.0 90.9 93.8 94.1 93.5 93.5 93.7

1000 89.7 89.2 93.0 96.1 96.9 97.7 97.8 98.0

2000 88.9 89.5 93.5 96.3 96.8 96.6 96.2 95.9

4000 79.9 81.2 86.1 89.7 89.1 88.0 87.5 86.5

8000 63.5 63.6 67.6 70.9 71.0 70.5 69.3 68.9

16000 20.6 23.8 29.5 33.0 32.9 29.8 29.3 31.6


94.7 94.7 98.6 101.6 102.0 102.0 102.0 102.0





Frequency (Hz)

31.5 66.5 66.2 70.0 71.9 72.0 72.0 72.0 71.7

63 75.7 75.5 79.4 81.3 81.4 81.4 81.4 81.2

125 82.6 82.5 86.4 88.3 88.7 88.8 88.8 88.7

250 85.6 85.6 89.2 91.0 91.5 91.1 91.1 91.1

500 87.4 87.0 90.9 92.7 93.2 92.7 92.8 92.9

1000 89.7 89.2 93.1 95.1 95.7 96.6 96.9 97.0

2000 88.9 89.5 93.5 95.3 95.9 95.6 95.1 94.7

4000 79.9 81.2 86.1 88.5 88.5 87.0 86.6 85.5

8000 63.6 63.6 67.6 69.8 70.1 69.5 68.7 67.3

16000 20.6 23.8 29.5 31.8 32.0 28.8 28.5 30.0


94.7 94.7 98.6 100.5 101.0 101.0 101.0 101.0









Frequency (Hz)

31.5 66.5 66.2 70.0 71.1 71.1 71.2 71.1 70.9

63 75.7 75.5 79.4 80.4 80.5 80.5 80.5 80.3

125 82.6 82.5 86.4 87.5 87.7 87.8 87.8 87.7

250 85.6 85.6 89.2 90.2 90.5 90.2 90.2 90.2

500 87.4 87.0 90.9 91.9 92.1 91.8 91.9 92.1

1000 89.7 89.2 93.0 94.2 94.7 95.6 96.0 96.0

2000 88.8 89.5 93.5 94.5 94.9 94.4 93.9 93.7

4000 79.9 81.2 86.1 87.5 87.3 86.0 85.5 84.4

8000 63.6 63.6 67.6 68.9 69.0 68.4 67.5 66.0

16000 20.6 23.8 29.5 30.7 30.7 27.4 27.4 29.2


94.7 94.7 98.6 99.7 100.0 100.0 100.0 100.0






Annex II – 1/3rd Octave Band Spectra - 80 m hub height

1.7-103 with LNTE NRO 104 – 1/3rd Octave Band Spectra



Frequency (Hz)

25 55.7 55.7 59.5 63.3 64.7 64.6 64.5 64.2

32 60.5 60.3 64.0 67.8 69.2 69.2 69.1 68.8

40 64.7 64.4 68.1 71.8 73.3 73.3 73.2 73.0

50 67.5 67.2 70.9 74.6 76.1 76.1 76.1 75.8

63 70.5 70.3 74.1 77.8 79.2 79.2 79.2 79.0

80 73.0 72.9 76.7 80.4 81.9 81.9 81.9 81.6

100 75.4 75.4 79.3 82.9 84.6 84.6 84.6 84.3

125 77.5 77.4 81.3 84.9 86.5 86.6 86.7 86.5

160 79.5 79.5 83.3 86.9 88.6 88.7 88.8 88.6

200 80.1 80.2 83.9 87.5 89.0 89.1 89.2 89.1

250 80.7 80.7 84.3 87.7 89.0 88.9 89.0 89.0

315 81.6 81.5 85.0 88.4 89.3 88.9 89.0 89.1

400 81.8 81.6 85.2 88.6 89.3 88.8 88.9 89.0

500 82.7 82.3 86.1 89.7 90.5 90.0 90.1 90.2

630 83.3 82.8 86.8 90.7 91.9 91.6 91.8 91.9

800 83.9 83.2 87.2 91.4 93.2 93.3 93.5 93.6

1000 84.7 84.2 87.9 91.9 94.4 94.8 95.0 95.1

1250 86.0 85.8 89.3 93.0 95.7 96.3 96.4 96.4

1600 85.5 85.6 89.3 92.7 95.2 95.5 95.6 95.2

2000 84.4 85.1 88.9 92.4 94.4 94.1 93.8 93.5

2500 81.5 83.1 87.6 91.2 92.5 91.6 90.9 90.7

3150 77.8 79.5 84.6 88.7 89.2 88.2 87.3 86.9

4000 74.2 74.2 79.7 84.7 84.7 84.4 82.9 82.4

5000 70.2 69.0 74.0 79.4 79.8 79.7 77.9 77.7

6300 63.2 63.1 67.1 71.7 72.7 72.4 71.2 70.8

8000 52.3 53.5 57.6 61.3 62.4 61.6 60.8 60.3

10000 38.1 40.6 45.3 49.0 49.7 48.3 48.1 48.4

12500 20.6 23.8 29.6 33.7 33.8 32.1 32.4 34.0

16000 -3.7 -0.6 6.2 11.5 10.8 9.6 11.1 13.5

20000 -29.4 -26.9 -19.3 -12.9 -14.4 -14.4 -11.8 -9.2


94.7 94.7 98.6 102.3 104.0 104.0 104.0 104.0

Table 8: 1/3rd Octave Spectra for 1.7-103 with LNTE NRO 104 - hub height wind speeds were calculated based on equation (7) from IEC standard 61400-11:2006. using a representative roughness lenght of 0.05 m








Frequency (Hz)

25 55.7 55.7 59.6 63.3 63.6 63.6 63.5 63.2

32 60.5 60.3 64.1 67.8 68.2 68.1 68.0 67.8

40 64.7 64.4 68.2 71.8 72.3 72.3 72.2 71.9

50 67.5 67.2 71.0 74.6 75.1 75.1 75.0 74.8

63 70.5 70.3 74.1 77.7 78.2 78.2 78.2 78.0

80 73.0 72.9 76.8 80.4 80.9 80.9 80.8 80.7

100 75.4 75.4 79.3 82.9 83.5 83.6 83.5 83.3

125 77.5 77.4 81.3 84.9 85.6 85.6 85.6 85.5

160 79.5 79.5 83.3 86.9 87.7 87.7 87.7 87.7

200 80.2 80.2 83.9 87.4 88.2 88.1 88.2 88.1

250 80.7 80.8 84.3 87.7 88.4 88.0 88.1 88.1

315 81.6 81.5 85.0 88.4 88.8 88.1 88.1 88.2

400 81.8 81.6 85.2 88.6 88.9 88.0 88.1 88.2

500 82.7 82.3 86.1 89.7 89.9 89.2 89.3 89.5

630 83.4 82.7 86.8 90.7 91.1 90.8 90.9 91.1

800 83.9 83.1 87.2 91.3 92.1 92.4 92.5 92.7

1000 84.7 84.1 87.9 91.9 93.2 93.9 94.0 94.1

1250 86.0 85.7 89.4 93.0 94.5 95.2 95.4 95.3

1600 85.5 85.6 89.3 92.7 94.0 94.3 94.4 94.1

2000 84.4 85.1 89.0 92.4 93.3 93.0 92.6 92.3

2500 81.5 83.3 87.6 91.2 91.5 90.6 89.9 89.5

3150 77.8 79.8 84.6 88.7 88.2 87.2 86.6 85.7

4000 74.1 74.4 79.7 84.7 83.8 83.3 82.4 81.4

5000 70.2 69.1 74.0 79.4 78.6 78.4 77.4 76.8

6300 63.2 63.1 67.1 71.7 71.7 71.1 70.0 69.7

8000 52.3 53.4 57.4 61.3 61.6 60.4 59.4 59.2

10000 38.2 40.5 45.2 49.0 49.2 47.1 46.4 47.2

12500 20.6 23.8 29.5 33.7 33.5 31.0 30.7 32.8

16000 -3.7 -0.5 6.2 11.5 10.5 8.0 9.5 12.2

20000 -29.4 -26.8 -19.3 -12.9 -14.7 -16.3 -13.6 -10.7


94.7 94.7 98.6 102.3 103.0 103.0 103.0 103.0









Frequency (Hz)

25 55.7 55.7 59.6 62.6 62.7 62.7 62.5 62.3

32 60.5 60.3 64.1 67.0 67.2 67.2 67.0 66.8

40 64.7 64.4 68.2 71.1 71.3 71.3 71.2 71.0

50 67.5 67.2 71.0 73.9 74.1 74.2 74.0 73.9

63 70.5 70.3 74.1 77.0 77.2 77.3 77.1 77.1

80 73.0 72.9 76.8 79.7 79.9 79.9 79.8 79.7

100 75.4 75.4 79.3 82.2 82.6 82.6 82.5 82.4

125 77.5 77.4 81.3 84.2 84.6 84.7 84.6 84.6

160 79.5 79.5 83.3 86.2 86.7 86.8 86.7 86.7

200 80.1 80.2 83.9 86.8 87.3 87.2 87.2 87.2

250 80.7 80.8 84.3 87.0 87.6 87.1 87.1 87.2

315 81.6 81.5 85.0 87.7 88.1 87.2 87.2 87.3

400 81.8 81.6 85.2 87.9 88.2 87.2 87.2 87.3

500 82.7 82.3 86.1 89.0 89.3 88.4 88.4 88.7

630 83.4 82.7 86.8 90.0 90.2 90.0 90.0 90.3

800 83.9 83.1 87.2 90.5 90.9 91.5 91.6 91.8

1000 84.7 84.1 87.9 91.1 91.9 92.8 93.0 93.2

1250 86.0 85.7 89.4 92.3 93.3 94.0 94.2 94.3

1600 85.5 85.6 89.3 92.1 92.9 93.3 93.1 92.9

2000 84.4 85.1 89.0 91.8 92.3 92.0 91.3 91.0

2500 81.6 83.3 87.6 90.6 90.6 89.5 88.7 88.3

3150 77.9 79.8 84.6 88.0 87.4 86.1 85.7 84.7

4000 74.2 74.4 79.7 83.8 83.0 82.4 81.5 80.5

5000 70.2 69.1 74.0 78.3 77.8 77.4 76.4 75.7

6300 63.1 63.1 67.1 70.5 70.6 70.1 68.9 68.5

8000 52.2 53.4 57.4 60.2 60.7 59.4 58.1 58.0

10000 38.1 40.5 45.2 48.2 48.4 46.1 45.0 46.1

12500 20.6 23.8 29.5 33.0 32.9 29.8 29.3 31.6

16000 -3.7 -0.6 6.2 10.5 9.8 6.6 8.0 10.8

20000 -29.4 -26.8 -19.3 -14.1 -15.4 -17.9 -15.3 -12.2


94.7 94.7 98.6 101.6 102.0 102.0 102.0 102.0









Frequency (Hz)

25 55.7 55.7 59.6 61.6 61.6 61.6 61.4 61.1

32 60.5 60.3 64.1 66.0 66.1 66.1 66.0 65.7

40 64.7 64.4 68.2 70.1 70.2 70.2 70.2 69.9

50 67.5 67.2 71.0 72.9 73.0 73.1 73.0 72.8

63 70.5 70.3 74.1 76.0 76.1 76.2 76.2 76.0

80 73.0 72.9 76.8 78.7 78.8 78.8 78.8 78.7

100 75.4 75.4 79.3 81.2 81.5 81.6 81.5 81.4

125 77.5 77.4 81.3 83.2 83.6 83.7 83.7 83.5

160 79.5 79.5 83.3 85.2 85.7 85.8 85.8 85.7

200 80.1 80.2 83.9 85.8 86.3 86.3 86.3 86.2

250 80.7 80.8 84.3 86.1 86.6 86.3 86.3 86.3

315 81.6 81.5 85.0 86.8 87.2 86.5 86.4 86.5

400 81.8 81.6 85.2 86.9 87.4 86.5 86.5 86.6

500 82.7 82.3 86.1 88.0 88.4 87.7 87.7 87.9

630 83.3 82.6 86.8 88.8 89.2 89.1 89.3 89.5

800 83.9 83.1 87.2 89.3 89.8 90.5 90.8 90.9

1000 84.7 84.1 88.0 90.0 90.7 91.7 92.1 92.2

1250 86.0 85.7 89.4 91.3 92.0 92.9 93.2 93.2

1600 85.5 85.6 89.3 91.2 91.8 92.2 92.0 91.7

2000 84.4 85.1 89.0 90.8 91.4 90.9 90.3 89.8

2500 81.5 83.3 87.6 89.5 89.9 88.5 87.8 87.4

3150 77.8 79.8 84.6 86.9 87.0 85.1 84.8 83.8

4000 74.2 74.4 79.6 82.4 82.2 81.3 80.7 79.5

5000 70.2 69.1 74.0 76.9 76.9 76.3 75.6 74.5

6300 63.2 63.1 67.1 69.4 69.7 69.1 68.3 66.9

8000 52.3 53.4 57.4 59.3 59.7 58.5 57.5 56.7

10000 38.1 40.5 45.2 47.1 47.5 45.3 44.3 44.8

12500 20.6 23.8 29.5 31.8 32.0 28.8 28.5 30.0

16000 -3.7 -0.6 6.2 9.0 9.0 5.3 6.7 9.1

20000 -29.4 -26.8 -19.3 -15.9 -16.1 -19.6 -17.0 -14.0


94.7 94.7 98.6 100.5 101.0 101.0 101.0 101.0









Frequency (Hz)

25 55.7 55.7 59.6 60.7 60.8 60.7 60.6 60.3

32 60.5 60.3 64.1 65.2 65.2 65.3 65.2 64.9

40 64.7 64.4 68.2 69.3 69.3 69.4 69.3 69.1

50 67.5 67.2 71.0 72.0 72.1 72.2 72.2 72.0

63 70.5 70.3 74.1 75.1 75.2 75.3 75.3 75.1

80 73.0 72.9 76.8 77.8 77.9 77.9 77.9 77.7

100 75.5 75.4 79.3 80.4 80.6 80.6 80.6 80.4

125 77.5 77.4 81.3 82.4 82.6 82.8 82.7 82.6

160 79.5 79.5 83.3 84.4 84.7 84.8 84.8 84.7

200 80.2 80.2 83.9 85.0 85.3 85.3 85.3 85.3

250 80.7 80.8 84.3 85.3 85.6 85.4 85.3 85.3

315 81.6 81.5 85.0 86.0 86.2 85.6 85.6 85.6

400 81.8 81.6 85.2 86.2 86.4 85.7 85.6 85.7

500 82.7 82.3 86.1 87.1 87.3 86.8 86.9 87.1

630 83.3 82.7 86.8 87.9 88.2 88.3 88.5 88.6

800 83.9 83.1 87.2 88.4 88.8 89.5 89.9 90.0

1000 84.7 84.1 87.9 89.1 89.7 90.7 91.2 91.2

1250 85.9 85.7 89.4 90.5 91.1 91.9 92.2 92.1

1600 85.4 85.6 89.3 90.4 90.9 91.1 90.8 90.6

2000 84.4 85.1 89.0 90.0 90.4 89.8 89.0 88.8

2500 81.5 83.3 87.6 88.7 88.8 87.3 86.7 86.2

3150 77.9 79.8 84.6 85.9 85.8 84.1 83.8 82.7

4000 74.2 74.4 79.7 81.2 81.0 80.2 79.6 78.4

5000 70.2 69.1 74.0 75.5 75.6 75.3 74.4 73.3

6300 63.3 63.1 67.1 68.5 68.6 68.0 67.1 65.6

8000 52.3 53.4 57.4 58.6 58.7 57.3 56.3 55.6

10000 38.2 40.5 45.2 46.1 46.3 44.1 43.1 43.9

12500 20.6 23.8 29.5 30.7 30.7 27.4 27.4 29.2

16000 -3.6 -0.6 6.2 7.8 7.4 3.9 5.6 8.3

20000 -29.4 -26.8 -19.3 -17.3 -17.9 -20.9 -18.1 -15.0


94.7 94.7 98.6 99.7 100.0 100.0 100.0 100.0


Documents

Template Technical Documentation - Livingston County x Table of Contents 1 Introduction ... Technical documentation GE Power & Water –Original Instructions Product Acoustic Specifications